发明名称 |
Remote air detection |
摘要 |
A transmitter (41) is arranged to produce and focus a beam (54) on a remote focal point (55). A small proportion of resultant light (58) is back-scattered from the focal point (55) by particles or aerosols in air flowing through point (55) and returns to a receiver (42) where it is collected A detector combines resultant light (58) and reference light (72), splits the resultant light (58) and reference light (72) equally between two arms and detects which arm leads the other in phase thereby indicating the flow direction of air through focal point (55).
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申请公布号 |
US6285288(B1) |
申请公布日期 |
2001.09.04 |
申请号 |
US19990271711 |
申请日期 |
1999.03.18 |
申请人 |
MARCONI ELECTRONIC SYSTEMS LIMITED |
发明人 |
LANGDON ROGER M;WATTS PHILIP M |
分类号 |
B64D43/00;G01P5/26;G01P13/02;G01S17/58;G01S17/93;(IPC1-7):G08B21/00 |
主分类号 |
B64D43/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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